For the functions f(x) and g(x), determine the domain of (f + g)(x) (the sum of f and g).f(x) = 
, g(x) = -9x3
A. {x ? x is a real number and x ? 3}
B. {x ? x is a real number and x ? 0}
C. {x ? x is a real number}
D. {x ? x is a real number and x ? -3}
Answer: B
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(d)x2 = y + 4
A. none B. one C. two D. three E. all
Write a negation for the statement.My brother is asleep.
A. My sister is awake. B. My sister is asleep. C. My brother is not asleep. D. The person who is asleep is not my brother.
Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.ln e + ln e-2
A. 0 B. e C. 1 D. -1
Find the coordinates of the vertex and the direction of opening of each parabola.y = (x + 2)2 + 7
A. (7, -4) opens downward B. (-2, 7) opens upward C. (-7, 2) opens upward D. (7, -2) opens downward